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In this series of whitepapers we will provide a comparison of Web services technologies, followed by a study of different Web services types for integration specific problems, provided both by IBM WebSphere SOA Edition and IBM Rational Application Developer. Finally we will outline an SOA case study, which will use Web service technology for Information Services, and at the same time, indicate that Information Services are only components in an overall SOA architecture.
Information Services is one of the core parts of the IBM SOA Reference Architecture, and are required for managing and accessing all forms of information in a Service Oriented Architecture. Thereby, Information Services emphasize on separating the physical implementation or location of the information from the processes and application that request the information.
The idea behind Information Services is to provide and access information through industry standards which then allows building business processes without the requirement to understand data source specific interfaces or the semantic and complexity of the functionality that these services deliver.
By definition, there is no particular technology in which Information Services have to be developed as long as four main principles are involved:
- Interoperability
- Modularity
- Reusability
- Componentization
However, Web service technology takes on an increasing significance as the interface in which Information Services are provided. But Information Services have specific characteristics for messages sizes, invocation pattern and service runtime. Therefore, it is necessary to understand these technologies to make the right choice for SOA implementation.
In this series of whitepapers we will provide a comparison of Web services technologies, followed by a study of different Web services types for integration specific problems, provided both by IBM WebSphere SOA Edition and IBM Rational Application Developer. Finally we will outline an SOA case study, which will use Web service technology for Information Services, and at the same time, indicate that Information Services are only components in an overall SOA architecture.
Generally, Information Services comprises the complete spectrum of Information Management functionality. However, for this series we have narrowed the focus to Information Integration Services, which is a specific type of service that provides real-time, integrated access to business information regardless of data location or format.
| Download the whitepapers | Description | Access method |
|---|---|---|
| Information integration services, Part 1: Service technologies for information integration (PDF, 70 KB) | Whitepaper | HTTP download |
| Information integration services, Part 2: Tools for information integration services (PDF, 70KB) | Whitepaper | HTTP download |
| Information integration services, Part 3: An SOA case study for information integration services (PDF, 245KB) | Whitepaper | HTTP download |
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BPEL4People Whitepaper
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BPEL
for Java technology Whitepaper
- Read Business Process Execution Language for Web Services Version 1.1 for
background on BPEL.
- The Web Service Business Process Execution Language Version 2.0 Working
draftis available from OASIS.
